alexdrydew opened a new issue, #38745:
URL: https://github.com/apache/airflow/issues/38745
### Apache Airflow version
2.8.4
### If "Other Airflow 2 version" selected, which one?
_No response_
### What happened?
It looks like expand_kwargs does not preserve templates that are stored in
xcom
### What you think should happen instead?
I believe in this case templates should not be rendered as this is the
behaviour of basic `PlainXComArg.resolve` and simple `.expand` as well
### How to reproduce
```python
import datetime
from airflow.decorators import dag, task
@task
def some_task():
return [{"value": "{{ foo }}"}]
@task
def print_task(value):
print(value)
@dag(
schedule=None,
start_date=datetime.datetime(2024, 1, 19),
catchup=False,
)
def pipeline():
print_task.expand_kwargs(some_task())
pipeline().test()
```
This fails with:
```
jinja2.exceptions.UndefinedError: 'foo' is undefined
```
### Operating System
macOS 14.2
### Versions of Apache Airflow Providers
_No response_
### Deployment
Virtualenv installation
### Deployment details
_No response_
### Anything else?
_No response_
### Are you willing to submit PR?
- [ ] Yes I am willing to submit a PR!
### Code of Conduct
- [X] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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